Finding the Fourth Proportional to 92,323.32, 138,429.56 and 42,340.80

Step by Step Solution

1. Step 1: Write the proportion equation
   92,323.32 : 138,429.56 = 42,340.80 : x
2. Step 2: Convert to fraction form
   92,323.32/138,429.56 = 42,340.80/x
3. Step 3: Cross multiply
   92,323.32x = 138,429.56 × 42,340.80
4. Step 4: Simplify right side
   92,323.32x = 5,861,218,314.05
5. Step 5: Solve for x
   x = 5,861,218,314.05/92,323.32
6. Step 6: Final answer
   x = 63,485.78